Comparison

ABG Expert vs CCRN Practice Test 2026

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ABG Expert

This medical tool provides accurate and flexible acid-base analysis for healthcare professionals. It offers detailed explanations, customizable ranges, and advanced features like anion gap correction and A-a gradient adjustments for various patient conditions and locations.

Highlights
  • Validated accuracy with real-world testing
  • Plausibility checks for physiologically impossible data
  • Automatic anion gap correction with albumin
  • Detailed explanations with equations
  • Separate or combined analysis of ABG, anion gap, A-a gradient
  • Customizable normal ranges for anion gap and delta gap
  • Age and barometric pressure adjustments for A-a gradient
  • Support for SI and non-SI units
  • Color-coded results and differential diagnoses
  • Adjustments for chronic respiratory conditions
Features
Read full description

ABG Expert™ is simply the best acid-base analysis tool with features available in no other app. Designed and tested by practicing physicians, ABG Expert is trusted by medical professionals for unparalleled accuracy, flexibility, and power while remaining completely intuitive to use. Whether you are a physician, nurse, respiratory therapist, paramedic, or student, ABG Expert is your ideal acid base analysis app. Accuracy- • ABG Expert has been validated using extensive testing under real-world conditions. • No need to worry about entering physiologically impossible data by mistake. Data is checked for plausibility and for internal consistency using the Henderson-Hasselbalch equation. • An accurate analysis depends on an accurate anion gap. ABG Expert has you covered with automatic correction of the anion gap when albumin is provided. • Never again wonder about how a result was obtained. Detailed explanations include easy-to-understand equations so you can be sure the calculations are correct. Flexibility- • Need the arterial blood gas analysis, but not the anion gap or A-a gradient? No problem. ABG Expert can analyze the data for all three results separately or together. • Set the normal anion gap range based on the normal range at your institution. Or, use your patient’s own baseline anion gap to maximize your sensitivity to detect disorders. • Caring for an 80-year-old patient in Denver? Provide age and barometric pressure, and ABG Expert automatically adjusts interpretation of the A-a gradient. • Need more specificity? Adjust the normal delta gap range based on the literature you follow in your practice. • ABG Expert works as well in Bangkok as it does in Boston with full support for SI and non-SI units. Power- • Color-coded results allow for rapid analysis in critical situations. One additional click gives you a detailed differential diagnosis and additional recommendations. • Concerned about a new problem in your patient with advanced COPD? ABG Expert can adjust its calculations for chronic respiratory conditions so you can detect additional disorders that are missed by other apps. • Detailed explanations of disorders integrate ABG, anion gap, and A-a gradient results providing individualized answers like no textbook can. • Refine your differential diagnosis even further with the included osmolal gap and urine anion gap calculators. • ABG Expert combines beauty and brains with optimization for iOS devices running iOS 13 and later. Disclaimer: Brian Dale Vander Werf MD Inc. has made every effort to ensure the accuracy of the information included in this product. However, the authors, developers, and Brian Dale Vander Werf MD Inc. are not responsible for errors or omissions or for any consequences from the use of this product and make no warranty, expressed or implied, with respect to the currency, completeness, or accuracy of the contents of this product. This product has been designed as a supplemental source of information for medical professionals. This product is not a substitute for clinical judgment, and the use of the information produced by this product in a particular situation remains the responsibility of the medical professional. Privacy Policy: This product does not collect, store, or transmit individually identifiable health information. References: NEJM. 2014; 371: 1434. Medicine. 1980; 59(3): 161. Kidney International. 2009; 76: 1239. Emerg Med. 1990; 19: 1310. Clin J Am Soc Nephrol. 2007; 2: 162. Nat Rev Nephrol. 2010; 6: 274. Anaesthesia. 2008; 63: 294. Clin J Am Soc Nephrol. 2012; 7: 671. The ICU Book. 3rd ed. Lippincott Williams & Wilkins; 2007.

About

CCRN Practice Test 2026

Prepare for your CCRN certification exam with over 750 practice questions and 370 flashcards. Master all exam areas with realistic simulations and detailed rationales. Study offline anytime, anywhere, and benefit from free updates for the latest guidelines.

Highlights
  • 750+ exam-like questions
  • 370+ flashcards
  • Over a dozen practice exams
  • Covers all major exam areas
  • Offline study capability
  • Free updates for 2026 guidelines
  • Detailed rationales
Features
Read full description

PASS YOUR EXAM FIRST TRY Crush the state boards material with 750+ exam-like questions and 370+ flashcards that help you remember more. Get access to over a dozen practice exams that will help you pass the first time.
 The CCRN® certification is a specialized certification for nurses who offer direct care to acutely/critically ill patients regardless of their location. Nurses who pursue this qualification may find employment in intensive care units, cardiac care units, combined ICU/CCUs, medical/surgical ICUs, trauma units, or critical care transport/flight. HAVE YOU EVER SAID, OH I’LL DO IT TOMORROW? Certified Critical Care Registered Nurses make a median salary of $95,835 per year, so what are you waiting for? Now it’s time to do it. Pass the most important exam of your career.
 YOU WILL MASTER ALL THE EXAM AREAS: • Cardiovascular • Pulmonary • Endocrine/Hematology/Gastrointestinal/Renal/Integumentary • Musculoskeletal/Neurology/Psychosocial And many more… This app has been updated to the latest 2026 guidelines.
 We provide free updates for our users to maintain the best user experience we can offer. WHY USE GETEXAM? - To experience our most realistic exam simulation yet - Study anywhere, anytime - Benefit from having the full suite of revision material on your mobile device - Latest Update: Questions ready for 2026 - Exam-Style Questions Written by Experts - 750+ practice questions and detailed rationales - Endless features that you can experience for FREE - Trusted by Industry Professionals - No network connection required!
 OUR SUCCESS STORIES “The questions were great. Explanations were informative and very detailed. It made understanding and recalling different terms much easier.” – Gracie-Mai R., 93 (average) “Great structure to the topics with in-depth information. I will recommend this to my fellow future estheticians.” – Lacey B., 87 (average)     Yes! Studying with our application saves dozens of learning hours and lets you get a head start towards mastering the exam. Yes! This app is straightforward to use.   Yes! Thousands of students have successfully used our materials to prepare for their exams!
 Privacy policy: https://www.get-exam.com/privacy-policy Terms of use: https://www.get-exam.com/terms
 Disclaimer: This application is not affiliated with or endorsed by any testing organisation, certificate, test name, or trademark. For any questions, you can always contact us at contact@get-exam.com. We're always happy to help! 
 Our Customer Assistance Team is available from 2 am to 6 pm UTC (7 am - 11 pm for the US), Monday - Saturday (except on major holidays).

Screenshots

ABG Expert4 screens
CCRN Practice Test 20264 screens

Verdict

The call

The clearest difference is review sentiment: ABG Expert at 100% against CCRN Practice Test 2026's 0%. ABG Expert also leads on in-app purchases (none vs 7) and update cadence (every 5 months vs every 12 months). CCRN Practice Test 2026's advantage is rating (5.0 vs 4.8). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CCRN Practice Test 2026 sells 7 in-app purchases, starting at $8.49 per 3 months. ABG Expert asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CCRN Practice Test 2026 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ABG Expert has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of ABG Expert's written reviews are positive against 0% of CCRN Practice Test 2026's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ABG Expert ships an update every 5 months, CCRN Practice Test 2026 every 12 months. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
ABG Expert versus CCRN Practice Test 2026: the parameters behind the verdict, then further details
ParameterABG ExpertCCRN Practice Test 2026
PriceFreeFree
Rating4.8 (9 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings9 — better1
Update frequencyEvery 5 months — betterEvery 12 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size2 MB34 MB
Age rating12+17+
DeveloperBrian Dale Vander Werf MD IncGet Exam

Customer experience

ABG Expert

All ratings9 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CCRN Practice Test 2026

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

ABG Expert

No in-app purchases

7 purchases

CCRN Practice Test 2026

Subscriptions7
  • 3 - Months Premium$8.493 Months
  • 1 - Month Premium$8.991 Month
  • 1 - Week Premium$9.997 Days
Show 4 more
  • 1 - Month Premium3 Days trial$15.991 Month
  • 3 - Months Premium7 Days trial$16.993 Months
  • 3 - Months Premium7 Days trial$35.993 Months
  • 12 - Months Premium14 Days trial$39.991 Year

Questions

Is ABG Expert free?
ABG Expert is free to download, with no in-app purchases.
Is CCRN Practice Test 2026 free?
CCRN Practice Test 2026 is free to download, with in-app purchases available.
Which has better reviews, ABG Expert or CCRN Practice Test 2026?
CCRN Practice Test 2026 is rated higher. ABG Expert averages 4.8 out of 5 from 9 ratings, while CCRN Practice Test 2026 averages 5.0 from 1 ratings.
Do ABG Expert or CCRN Practice Test 2026 have ads?
Neither ABG Expert nor CCRN Practice Test 2026 shows ads.
Which is updated more often, ABG Expert or CCRN Practice Test 2026?
ABG Expert ships an update every 5 months, and CCRN Practice Test 2026 every 12 months. Most recently, ABG Expert was updated on October 20, 2026 and CCRN Practice Test 2026 on October 7, 2026.

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